With demand for the iPhone bordering on rabid, Apple is daring to call the shots with wireless carriers. Google, meanwhile, has pledged billions of dollars to buy wireless airwaves in the United States in an effort to shake up what it sees as a cozy oligopoly. Apple and Google see the status quo in North America as holding back the spread of mobile Internet usage, and thus their own growth, so both are moving to fundamentally change the business.—War for the wireless world